Effect of municipal solid waste ash on comprehensive strength characteristics of an interlocking block masonry wall

2013 ◽  
Vol 8 (2) ◽  
Author(s):  
FS Isaac ◽  
RO Onchiri ◽  
TY Tsado
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Masonry Wall ◽  
Strength Characteristics ◽  
Solid Waste Ash

scholarly journals Toxicological Assessment of Crops Grown in Soils Amended with Municipal Solid Waste Ash

2021 ◽  
pp. 12-20
Author(s):  
G. D. Ibrahim ◽  
E. O. Nwaichi ◽  
G. O. Abu
Keyword(s):  
Heavy Metals ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Animal Husbandry ◽  
Test Site ◽  
Toxicological Assessment ◽  
Accumulation Index ◽  
And Control ◽  
Solid Waste Ash ◽  
Translocation Factors

This study assessed heavy metals (As, Cd, Cr, Cu, Pb, Ni, Fe and Zn) in sites and food crops (beans and groundnuts) harvested from farmland amended with municipal solid waste (MSW) ash. Farmlands with no amendments and crops grown on such soils served as control. Soils and crops samples were collected at full maturity to determine soil levels (mgkg-1), translocation in crops and accumulation index of metals. The crops were separated into roots, leaves and grains before analysis and heavy metals were determined using VGB 210 Atomic Absorption Spectrometer. Mean concentrations (mgkg-1) of studied metals were 0.053±0.03, 0.053±0.01, 648.55±1.07, 168.699±1.05, 36.514±4.66, 339.53±0.12, 232.331±0.69 and 363.482±0.00 in test soils and 0.010±0.10, 0.050±0.01, 83.333±1.00, 38.618±1.03, 2.913±0.00, 163.248±0.22, 41.579±3.01and 82.798±0.28 in control soils for As, Cd, Cr, Cu, Ni, Pb, Fe and Zn respectively. Observed levels for test soils were significant (p≤0.05) in comparison to those of the control and were highest for Cr, Cu, Ni, Fe and Zn. Metals concentrations in the tissues of beans and groundnut grown on both sites were found to be decreasing in the order roots > leaves > grains. Levels of As, Cr, Cu, Ni and Fe fell below the WHO standard while Cd, Pb and Zn exceeded those set limits. Translocation factors for beans and groundnut cultivated on test site indicated effective translocation of arsenic from soils to the roots. Observed pattern has health implication for raised fodder for animal husbandry in such areas. Similarly, the geo-accumulation index of both test and control sites revealed they were polluted with Zn, Cr, Ni, Cu, Ni, Cu and Fe.

scholarly journals Study of Asphalt Binder Oil Residue and Municipal Solid Waste Ash to be Used in Low Traffic Pavements

2014 ◽  
Vol 1 (2) ◽  
pp. 23-29
Author(s):  
M.D.T. Casagrande ◽  
G.O.C. Vizcarra ◽  
Á. Pereira ◽  
V.A. Paulon
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Asphalt Binder ◽  
Oil Residue ◽  
Solid Waste Ash ◽  
Low Traffic

Recycling of Municipal Solid Waste Ash Through an Innovative Technology to Produce Commercial Zeolite Material of High Cation Exchange Capacity

2008 ◽  
Author(s):  
Maysson Sallam ◽  
Robert P. Carnahan ◽  
Abla Zayed ◽  
Sermin Sunol
Keyword(s):  
Municipal Solid Waste ◽  
Cation Exchange ◽  
Solid Waste ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Ammonia Removal ◽  
Innovative Technology ◽  
Acetate Solution ◽  
Zeolite A ◽  
Solid Waste Ash

Municipal solid waste ash (MSW ash) samples, obtained from a local incinerator in Florida, were converted via a chemical process into zeolite material. The conversion process was performed by applying a two step treatment. The ash samples were fused at 550°C under alkaline conditions and then the fused ash samples were treated hydro-thermally at 60 °C and 100°C for different periods. This innovative technology involves adjusting the SiO2/Al2O3 ratio of the ash from 13.9 to 2.5 by adding sodium aluminates and by using a solid to liquid ratio of 10. The fusion step formed sodium silicate and sodium aluminum silicate phases. These phases acted as precursors to the formation of zeolite A. Zeolite A was successfully formed within the ash matrix when samples were fused and SiO2/Al2O3 was adjusted. The maximum cation exchange capacity, CEC, was measured by using ammonium acetate solution. The CEC of the produced zeolitic ash material has increased significantly from 17 meq/100g for non-treated ash up to 212 meq/100g for the treated ash. The cation exchange capacity of the produced zeolite ash material is close to that available from commercial zeolite materials which have a CEC of 245meq/100g. Zeolite A formation within the ash matrix increased the potential of using the ash as an adsorbent for industrial and environmental applications including ammonia removal from waste water or any other similar application that involves cation exchange.

Municipal solid waste ash

2022 ◽  
pp. 93-177
Author(s):  
Regina Mambeli Barros
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Solid Waste Ash

Experimental Study on the Shear Strength Characteristics of Municipal Solid Waste

2011 ◽  
Vol 219-220 ◽  
pp. 660-664 ◽  
Author(s):  
Zhen Ying Zhang ◽  
Da Zhi Wu
Keyword(s):  
Shear Strength ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Effective Stress ◽  
Large Scale ◽  
Void Ratio ◽  
Influence Factor ◽  
Axial Strain ◽  
Strength Characteristics ◽  
Initial Void Ratio

Basing on the traditional tri-axial test instrument with large scale specimen, the shear strength characteristics of municipal solid waste has been studied. The municipal solid waste is divided into three parts: the material that is easy to be biodegraded, reinforced material that is difficult to be biodegraded and the incompressible solid waste material. Two different proportions of these three parts, which are 50%, 15%, 35% and 65%, 10%, 25% is selected. A series of laboratory tests have been performed for different proportion of ingredients, different initial void ratios and different confining pressures. Testing results show that the initial void ratio and the proportion of ingredients are the main influence factor for the shear strength of the municipal solid waste. Besides, the principle effective stress increases with the axial strain and the confining pressure in a hardening increasing trend, and the principle effective stress decreases with the increase of the initial void ratio of the municipal solid waste.

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